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eng physics

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in a downhill race a skier slides down a 40 degree slope. starting from rest how far must he slide down the slope to reach a speed of 130 km/hr. ignore air friction and assume the co effiecnt of kinetic friction between skies and snow is .1

  • eng physics - ,

    ForceNet=mg

    but force net= mg*CosTheta-friction
    net force= mg*cosTheta-mu*mg*SinTheta

    set that equal to ma, solve for a.

    Now, knowing a
    Vf^2=Vi^2+2ad solve for distance d.

    put velocities in m/s

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